<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>CSS标签选择器</title>
    <style>
        /* 标签选择器 写上标签名就好 */
        p {
            color: blue;
        }
    </style>
</head>

<body>
    <p>男生</p>
    <p>男生</p>
    <p>男生</p>
    <div>女生</di>
        <div>女生</di>
            <div>女生</di>
</body>

</html>